Monocarpic plants are those plants that flower and fruit only once and then die. In india himalayan rivers like ganga and bhramaputra are perennial rivers. These are of a relatively lower height and are woody plants. The rivers that have water throughout the year are called perennial rivers. Inundation canals are being converted to perennial canals because: Perennial rivers and lakes are those which bear water throughout the year while seasonal rivers and lakes have water only during a particular period, ie rainy season. Give reasons why the himalayan region consists of perennial rivers. Most perennial plants are polycarpic. What are perennial and non-perennial rivers? The grassland ecosystem contains plants that do not grow much. The himalayan river system are perennial because they get glacier water during summer season. Most of the rivers in peninsular india are non-perennial because they are mostly rain-fed. They flower many seasons in a lifetime. These are both rain fed and formed through melting of … Was this answer helpful? In this, water is taken out directly from the rivers without making any kind of barrage or dam. (ii) they get supply of water only when the rivers are in flood. The plants may be annual (brassica), biennial (sugar beet) or perennial (canna). Hence, option a is correct. Such canals are useful for the diversion of flood water from the rivers and remain … They are also called as semelparous plants. (i) they remain operational only during the rainy season. Most himalayan rivers originating in himalayan peaks are perennial because they are fed by the melting snow throughout the year. Their height can vary from 1-4 m. Grasslands grow in the area where there is less moisture in the soil. Grassland ecosystem contains five types of grasslands that are … Inundation canals 1.